Katsuta, Japan

Jinichi Toyama

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1979-1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jinichi Toyama. Retrieved from https://idiyas.com/inventor/jinichi-toyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 13(Granted Patents)


Location History:

  • Katsuta, JP (1979 - 1980)
  • Ibaraki, JP (1980)

Company Filing History:


Years Active: 1979-1980

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3 patents (USPTO):Explore Patents

Title: Jinichi Toyama: Innovator in Motor Control Technology

Introduction

Jinichi Toyama is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of motor control technology, holding a total of 3 patents. His work focuses on improving the efficiency and reliability of electric motor systems.

Latest Patents

One of his latest patents is a motor control apparatus with an improved thyristor chopper circuit. This innovative device supplies current from a D-C source to an electric motor using a thyristor chopper circuit, which is controlled based on a current instruction signal. The design includes main and auxiliary thyristors, along with commutating elements that generate a pulse of current to turn off the main thyristor. Another significant patent is a control apparatus for electric motor vehicles. This system enhances the duty cycle of a chopper circuit when a vehicle starts on an uphill gradient, ensuring reliable operation and effective counter current braking.

Career Highlights

Jinichi Toyama is currently employed at Hitachi, Ltd., where he continues to develop advanced motor control technologies. His work has been instrumental in enhancing the performance of electric drive systems.

Collaborations

He has collaborated with notable coworkers, including Masahiko Ibamoto and Hisakatsu Kiwaki, contributing to various innovative projects within the company.

Conclusion

Jinichi Toyama's contributions to motor control technology demonstrate his commitment to innovation and excellence in engineering. His patents reflect a deep understanding of electric motor systems and their applications in modern technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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